A simple piece of malicious software is circulating that steals Litecoins, a virtual currency based on the Bitcoin system. Security vendor ESET wrote the malware infects Windows computers. The program tries to steal "wallet.dat" files, which are used to store Litecoins in software programs. The malware "is not very widespread at the moment, but Litecoin may become a target for attackers as its popularity and user base increases," wrote Robert Lipovsky, a malware researcher with ESET. The malware sent the wallet file to a remote FTP server controlled by the attacker. But the web host has been made aware of the scam, and a warning is now shown when connecting to the attacker's FTP site. The main Litecoin software application, called Litecoin-Qt, has a feature that lets users encrypt their wallet. An attacker would still need a password in order to unlock the coins. Litecoin ...